You wear one daily.. might as well up your mask game! Our 100% mulberry silk face masks are gentle on skin and help prevent mask acne. Silk absorbs moisture while stopping bacterial growth process, making it an antibacterial fabric. Cotton or medical masks, as they are worn, become humid from our breath and thus a breeding-ground for acne causing bacteria. Durable, and washable, switching to a silk mask will make your skin thank you.